Chain tool



c. E. DAVIS CHAIN TOOL Filed Feb. 11, 1929 INVENTOR Ch arlea I .Dam: BY

ATTORNEY Patented Feb. 24,

' CHARLES E. nAvIs,1 oF- roRT Ann, OREGON. .4

:1 id in the repair or replacement of chain links chines, and other machines f operation, relatively'large crews are held up CHAIN-TOOL Application filed February i1, 1e29, Serial n), 339, 23 P My inventionrelates to tools adapted and is specifically "designed to perform this function with chains comprising so-called Jackson links, WlllCh latter chains are commonly used in harvestingand threshmgmaduty,

gi'on.

are housed in and when breakdowns occur in for a considerable period and considerable damage results from making such breakdown repairs. The common manner of repairing such links is to spread the engaging portions apart by a tapered tool such as a chisel or punch driven by a hammer. The difficulty at making such repairs, even when such machine is out of operation, results in necessary repairs being sults from such delay.

' I have discovered that such links'can be removed or adjusted by use of a pair of longhandled j aw tools resembling nippers by which rivets can be nipped from such links, the latter can be spread apart and replaced and the newlinks clinched'withina few minuteswithmt a great deal of difficulty and without 1njury to such chains or-adjacent devices.

' For convenienceof operation, one or both.

of the handles of such tools terminates in a narrow point, the tip of'which carries alaterallyextending projection adapted to. en'- gage' the spaced ends of such chains in assembling and to draw such ends together.

The detailsof such chain tools are here inafter described with reference to the accom panying drawings, in which:

Fig. 1 is a foreshortened elevation of such tools shown engaging one of the links of a Jackson chain to clinch the-latter;

Fig. 2 is a plan view of such device with -he chain tools in position to spread one of the links for disengagement; and i h Fig. 3 is a fragmentary side elevation of the parts. arranged as in Fig. 2.

My improved chain tools comprise a pair of pivoted members a and a cooperating toadaptedjfor heavy" and because of such severe conditions are sub ect to'breakage and unusual elonga-- In machines of thischaracter such chains vided at their necks with put oil, and severe injury retween the outer to be used asa' pry to engage the ends-of a chain'to draw them into engagement with each other. The members aa, atjthe opposite sideof such pivot are'formed'toconstitute cooperating jaws and "terminate at wedge-shaped laterally arranged fpoints d'fd Such wedge-shaped points are prorelatively lateral outstanding shoulders e, asshown in Fig. '1, which, when the jaws are in engagement, as shown in such figure, are spaced apart exactly the width of-the link, f of suchJackson chain, as shown'in' Fig. 2. They a-rertapered a distance 'suiiicient to lift one end of such link f to permit one of the annular rings 9 to be removed from en gagement therewith. In the drawings the tool and-the links are shown full sc'ale,' as for use in'a harvesterjor threshing'machi'ne, and the base of the tapered portion of such points d-d is made substantially three-eighths of thering g to be passed therethru.

The purpose'of thefsh oulders'e is to engagethe sides of the link f, as shown in Fig. 2, so that the wedge shaped ends (Z(Z of suchtool will each enter the link exactly the same vdistance an'd the sharpened edges thereof'will meet on the center line of the link 7". Thus the portion or" the link moved out of clinched position will be lifted uniformly across the entirewidth of the link and the groovevwill be formed of uniform width. Such wedge-shaped ends d dt are made substantially narrower than the remainder'of such jaws, as'is shown in- Fig. Zyandsuch portions are approximately three-eighth's of an inch in" width, as this is the distance beedge of the annular rings-g and the abutting edges of the link f Thus such Wedge-shaped portions are adaptedto Y get-her andconnected by apin 6:} Such memextend under only one-half of the link to unclinch the same.

to the major dimension" ot such -tool a-nd parallel to the major dimension of such pocket. Such tool thus is adapted to be-used with the handle portions atirightiangles to the chain. This is to permit such tool to operate upon-thechains of harvesters and .threshers'fromabove, such ,chains being enclosed at'the 'sidessmaking repairs difiiculti 7 such annularjaw. intermediate- 'such wedgeshaped por tions and the pivot thereof being formed to I claim 1. Pliers for cutting, separating and closi-ging theli-nks of a chain provided with periodie links each maderup of a'single section of flat, flexible material formed into two con-- tinuous adj a-centloops the ends of such section being in abutment and arranged inter- -mediate such loops,-th e latter encircling annu- :lar link. elements of; ,greater -width. than v such flexible links, suchplierscomprisinga pair of elongated pivotally connected mem- .bers formedat one end into cooperating jaws of: substantially uniform proportions, each exterior of'such annular link and of a lengthgreaterithan one-half of theavidth of such. annular linkand abrupt lateral shoulders l formed uponsuch narrowed 'portions and a ofsuch jaws terminating in arnarrowed "sharp-edged wedge-shaped portion substantially as wide as the spacingbetween the point of abutment in such flexible link and the intermediate the ends thereofspaced apart a distance equal to the width of such fiexible links. v

- '2. Pliers for-cutting;separatingand clos- .ing the links of archain provided with periodiclinksgeachmadeup of a singlesection or flat, flexible material formed into two continuous-adjacent loops the ends oil'such section beingin abutment "and arranged intermediate such loops, thelatter encircling annular link elements of greater ,\VlCltl1=l1ll2ll1 such flexible links, such pliers comprising a pair of elongated pivotally connected; members'formed at'oneend into cooperatingjaws of substantially uniformp'roportions, each E sharp=edged "wedge-shaped portion substantially as wide as thespacing between the of such jaws terminating in a narrowed point of abutment in :such flexible -link and termediate such loops, the lattercncircling annular link elements of greater width than such flexible links, such pliers comprising a pair of elongated pivotally connected membersiformecl. atone end into cooperating jaws of substantially uniform proportions, each ot such jawsterminating in a narrowed sharpeedged Wedge-shaped portion substantially as wide asthe spacing between the point of abutment in such flexible link and the exterior of such annular link and of a vlength greater than one-half ofthe width of link andthe portions of such 7 'definean interiorly elongated pocket, the jmajor dimension of which extendssubstanv tially parallel to such wedge=shaped portions, the portions of such jaws defining such pocket" being of substantially greater width" thanthickness otsuch latter portions,

4.1 Pliersv for cutting, separating and closing the li nks of a chain provided: with period ic links eachmadeup of a singlesection of;

.flat,'flexiblevmaterial formed into two'continuous adjacent loops the ends of suchsection being inabutment and arranged intermed ate such loops, the latter encircling. an-

such flexible links,, such pliers comprising a 'tion being in abutment and arranged in-' nular link elements of greater width than 4 pair of elongated pivotally connected members formed at one end into cooperating jaws of substantially uniform proportions, each of "suchijaws vterminating in a narrowed sharp-edged wedge-shaped,portion substantially as'wide. as the spacing between the point of abutment in such flexible link and the exterior of such annular linkand of a length greaterthan one-half ofthe width a of such annular link, abrupt lateral shoul 'ders formed. upon. such narrowed portions and intermediate .the ,ends thereof spaced apart a distanceequal tothe .width of such flexible links.

In testimony whereof- Iaflix my, signature.

; Ea DAVIS- 'stheaexterior'. ofz'suchfiannular linkjandof. a 7 6 zzlength igreater' than one-half oii-thezwidth vof I such;- annular: link; and abrupt lateral shoul- Mders tormedon oppositesides' of each ofsuch narrowed, portions; g and intermediateathe ends the'reo t spaced apart. a distance equal to 

